C25C 3/04
Electrolytic production, recovery or refining of metals by electrolysis of melts: of
Official title: of magnesium
C25C3/04 (Electrolytic production, recovery or refining of metals by electrolysis of melts: of) appears on 86 US grants and 53 published applications in this corpus.
Search patents in C25C- Granted patents
- 86
- Published applications
- 53
- Assignees
- 55
- Inventors
- 226
- Latest grant
- 17 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 5 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 5 | 0 |
| 1984 | 3 | 0 |
| 1985 | 7 | 0 |
| 1986 | 6 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 3 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 7 | 0 |
| 1996 | 2 | 0 |
| 1997 | 3 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 1 |
| 2004 | 1 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 3 |
| 2009 | 0 | 1 |
| 2010 | 1 | 2 |
| 2011 | 1 | 2 |
| 2012 | 0 | 0 |
| 2013 | 0 | 4 |
| 2014 | 2 | 1 |
| 2015 | 0 | 4 |
| 2016 | 0 | 6 |
| 2017 | 1 | 4 |
| 2018 | 6 | 3 |
| 2019 | 2 | 0 |
| 2020 | 4 | 0 |
| 2021 | 0 | 5 |
| 2022 | 0 | 2 |
| 2023 | 1 | 3 |
| 2024 | 2 | 2 |
| 2025 | 2 | 3 |
| 2026 | 1 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- System for producing magnesium chloride and system for producing magnesium17 Mar 2026US 12,577,120 B2Mitsubishi Heavy Industries, Ltd.
- Systems and methods for feeding solid material and a gas into an electrolytic cell15 Jul 2025US 12,359,329 B2Phoenix Tailings, Inc.
- System for producing magnesium chloride aqueous solution and system for producing magnesium8 Jul 2025US 12,351,475 B2Mitsubishi Heavy Industries, Ltd.
- Automated corrosion monitoring and control system for molten salt equipment23 Jul 2024US 12,043,904 B2Uchicago Argonne, LLC
- System and method for extracting oxygen from powdered metal oxides21 May 2024US 11,987,893 B2Airbus Defence and Space GmbH
- Production of magnesium30 Jul 2026US 2026/0218334 A1Njordur Holding ehf.
- Method for preparing metallic magnesium and industrial silicon by decomposing serpentine with hydrochloric acid12 Mar 2026US 2026/0071343 A1Toli County Zhongda Magnesium Industry Co., Ltd
- Products, systems, and methods for transporting metal12 Feb 2026US 2026/0043163 A1Alcoa USA Corp.
- Methods, systems, and devices for purifying metal-containing material1 Jan 2026US 2026/0002276 A1Form Energy, Inc.
- Systems and methods for feeding solid material and a gas into an electrolytic cell18 Dec 2025US 2025/0382718 A1Phoenix Tailings, Inc.
Most cited
By later US patents
- Electrolysis cell for a molten electrolyte67US 4,604,177 AAlcan International Limited · 1986
- Anode63US 4,604,178 AThe Dow Chemical Company · 1986
- Process and apparatus for low temperature electrolysis of oxides59US 5,279,715 AAluminum Company of America · 1994
- Electrolytic recovery system for obtaining titanium metal from its ore48US 4,487,677 AMetals Production Research, Inc. · 1984
- Process and apparatus for low temperature electrolysis of oxides48US 5,415,742 AAluminum Company of America · 1995